District heating rusted pipeline with steel tube installed in underground tunnel. Insulated steel pipe in deep trench
Reconstruction insulated pipes used for district heating and hot water supply
Reconstruction of pipelines system heat power plant and district heating lines. Heat supply of municipality district
Aerial of powerful yellow excavator digging trench with bucket. Laying of underground power cables in red flexible doublecoat corrugated pipes. Electrical lines installation on construstion site.
Smoking chimneys on hydro power station on winter city landscape. Aerial view industrial pipes on heating plant. Industrial district on snowy city background
Steel pipes and tubes of air conditioning ceiling system. Roof structure with iron beams in large hight warehouse storage. Heating, ventilation and air conditioning. Industrial ventilation system